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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 275 | $link = str_replace('%pagename%', get_page_uri( $post ), $link); |
| 276 | } |
| 277 | |
| 278 | $link = home_url($link); |
| 279 | $link = user_trailingslashit($link, 'page'); |
| 280 | } else { |
| 281 | $link = home_url( '?page_id=' . $post->ID ); |
| 282 | } |
| 283 | |
| 284 | return apply_filters( '_get_page_link', $link, $post->ID ); |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Retrieve permalink for attachment. |
| 289 | * |
| 290 | * This can be used in the WordPress Loop or outside of it. |
| 291 | * |
| 292 | * @since 2.0.0 |
| 293 | * |